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000892731 1001_ $$0P:(DE-Juel1)176190$$aSietmann, Michael$$b0$$eCorresponding author
000892731 245__ $$aAn analysis of the imperfections and defects inside composite bipolar plates using X-Ray computer tomography and resistivity simulations
000892731 260__ $$aNew York, NY [u.a.]$$bElsevier$$c2021
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000892731 520__ $$aWith the increasing mass production, the quality control of bipolar plates (BPPs) becomes more important. A classification and understanding of imperfections and defects is necessary for the design of quality assurance measures within the manufacturing process. In this paper, a combined X-Ray computer tomography (CT) and resistivity simulation approach is used to investigate graphite composite BPPs. With this non-destructive approach, the morphology and composition of a detailed BPP section, as well as an entire flow field, can be analyzed for its characteristics and defects. The different detected imperfections occurring in injection-molded and compression-molded BPP samples include cracks, air bubbles and agglomerations of voids and foreign particles. The investigated flow field geometry has a major impact and increases the electrical resistance by about 19% compared to a bulk material body. The investigated imperfections inside the BPP material have a minimal impact on the electrical resistance of the BPP.
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000892731 7001_ $$0P:(DE-Juel1)129863$$aJanßen, Holger$$b1
000892731 7001_ $$0P:(DE-Juel1)129892$$aMüller, Martin$$b2
000892731 7001_ $$0P:(DE-Juel1)129883$$aLehnert, Werner$$b3
000892731 773__ $$0PERI:(DE-600)1484487-4$$a10.1016/j.ijhydene.2021.05.078$$gp. S0360319921018322$$n50$$p 25677-25688$$tInternational journal of hydrogen energy$$v46$$x0360-3199$$y2021
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